<!-- <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
<form action="/doLogin" method="post">
    username:<input id="username" name="username" type="text"><br>
    password:<input id="password" name="password" type="password"><br>
    <button  type="submit">submit1</button>
</form>
</body>
</html> -->

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>内容</title>
</head>
<body>
<form action="/login" method="post">
    <input type="text" name="username"/>
    <input type="password" name="password"/>
    <input type="submit" value="提交"/>
</form>

</body>
</html>